How use L for sub and R for mid/high

[João]

Hey, I'm new here,
I have an analog amplifier, and I have a mid/high speaker and subwoofer, while I don't have enough money to buy a crossover, I wanted to know if there is a way that
turns laptop audio jack L turn to subwoofer output and R turn to the mid/high speaker. There is some free program, more like DSP where I can control my L and R laptop outputs

 

[infinitesymphony]

Does your subwoofer have a crossover with cutoff adjustment? Does it have any pass-through outputs? If so, sum to mono and use a pass-through.

Otherwise, there's a plugin for foobar2000 called "equalizer split" that would accomplish what you asked in your question. You can EQ the left and right channels independently, high-passing one side and low-passing the other.

https://www.foobar2000.org/components/view/foo_dsp_eqsplit

Not sure if this plugin is still functional in current editions.